With all due respect;
What I dislike is the pre-entry of a company that has direct knowledge of
the format, tying up the easy (and less expensive) methods of decoding the
time data using prior inside information and the patent system.
Let's say you find out what this PM modulation format is and decide to make
a NTP server based on the new format. Much to your surprise, the method you
want to design to has already been patented (by XW). The only option you
have is to possibly design with a more expensive and hence less marketable
device.
Sorry to keep beating this poor horse.
Regards,
Tom
----- Original Message -----
From: "Bob Camp" <[email protected]>
To: "'Discussion of precise time and frequency measurement'"
<[email protected]>
Sent: Wednesday, September 26, 2012 5:06 PM
Subject: Re: [time-nuts] WWVB Now a Monopoly
Hi
I don't have a problem with going after a known format. What I have been
worried about is the existence of a portion of the format that we simply do
not know about (yet).
Of less concern are the minor details about the actual transmission. For
instance: Added AM modulation (or not) to zero carrier at the point of phase
change is as yet unmentioned.
Bob
-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Poul-Henning Kamp
Sent: Wednesday, September 26, 2012 2:05 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] WWVB Now a Monopoly
In message <[email protected]>, Clint Turner writes:
In reviewing the NIST document, I don't see anything particularly
difficult about the new format - either in terms of extracting the time
or phase/frequency information from the transmissions.
As a somewhat seasoned VLF SDR radio-nut, I must admit that I find
the yelling of bloody murder over a so simple and well documented
transmission format.
Class action suit because they *improve* your VLF time/freq reference
signal and document the new format ?
Really ?
--
Poul-Henning Kamp | UNIX since Zilog Zeus 3.20
[email protected] | TCP/IP since RFC 956
FreeBSD committer | BSD since 4.3-tahoe
Never attribute to malice what can adequately be explained by incompetence.
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